The extremely high cost of running a world class zoo is limiting what animals are seen by the public. A few, very wealthy families now determine what animals can be acquired and seen. Zoo administrators should choose what animals are displayed. If we reduce the budget so that the zoo is supported only by ticket sales and gift shop receipts, the public will see less exotic animals.

Which statement below, if true, would weaken the argument?

Which of the following most logically completes the argument below?

Twenty percent of the stores in Morganville's downtown shopping district will fail within five years because they will be competing directly with the SaveMart discount department store newly opened in East Morganville. The downtown shopping district has lost business at this rate before and has always completely rebounded. Confidence that it will rebound again from the losses it is now about to suffer is ill founded, however, because __________.

In 1978, astronomers learned that Pluto (which was then considered the outermost planet but is now classified as a dwarf planet rather than as a planet) has a moon, Charon, half as big across as Pluto itself. Over the next decade, astronomers succeeded in obtaining accurate measurements of the diameters of Pluto and Charon. Relying in part on knowledge of the orbital characteristics of Pluto and Charon, astronomers were then able to estimate the mass of Pluto. Information about Pluto's diameter and the estimates of its mass made estimates of Pluto's density (i.e., average density) possible. These estimates in turn provided clues to Pluto's composition.

When astronomers divided the estimated mass of Pluto by its observed volume, they found that Pluto is nearly twice as dense as water. This finding came as a surprise for two reasons. Spectrographic observations of Pluto had revealed that its surface is composed of frozen methane, which has a low density. If Pluto were composed entirely of frozen methane, it would have a density only a little more than half that of water. In addition, the density of planets, dwarf planets, and planetary satellites in our solar system (excluding the gaseous outer planets Jupiter, Saturn, Uranus, and Neptune) generally decreases with the distance from the Sun. The four inner planets (Mercury, Venus, Earth, and Mars) are primarily made of rock and iron and are four to five times as dense as water. By contrast, the measured densities of the main satellites of Jupiter are between two and three times that of water, while the smaller moons of Saturn have a density close to that of water; in fact, some of Saturn's moons are virtually pure ice.

For these reasons astronomers had assumed that Pluto would be composed mainly of either frozen water or frozen methane; if the newly derived density is correct, however, Pluto must be approximately three - quarters rock. Most of the rest is probably frozen water, with some frozen methane. It seems likely that Pluto once suffered a meltdown, during which about one - third of its ice turned into water. As a result the rock sank to Pluto's center. Currently surrounding the rocky core is a mantle of frozen water, with some methane trapped in the surface levels.

Jane can paint the wall in J hours, and Bill can paint the same wall in B hours. They begin at noon together. If J and B are both even numbers is J=B?

(1) Jane and Bill finish at 4:48 p.m.

(2) (J+B)²=400

If the prime factorization of the integer q can be expressed as a^2xb^xc^3x−1, where a, b, c, and x are distinct positive integers, which of the following could be the total number of factors of q?

If [k] denotes the least integer greater than k, is [k] = 0?

(1)

(2) 0 ≤ k

The light in a restroom operates with a 15-minute timer that is reset every time the door opens as a person goes in or out of the room. Thus, after someone enters or exits the room, the light remains on for only 15 minutes unless the door opens again and resets the timer for another 15 minutes. If the times listed above are the times at which the door opened from 8:00 to 10:00, approximately how many minutes during this two-hour period was the light off?

Lowering which of the following numbers by one will result in the least decrease of n?

At a marketing meeting on Thursday, a company scheduled 2 press conferences—each 16 to 18 weeks in the future—for the announcement of new products to the public. One of the conferences will be held on a Monday and the other conference will be held on a Friday.

In the table, select a value for M, the number of days from the Thursday meeting to the Monday conference, and a value for F, the number of days from the Thursday meeting to the Friday conference, that are jointly consistent with the given information. Make only two selections, one in each column.

Consumers in the country of Kartigia who buy a new car keep it an average of four years before replacing it. In nearby Pomon, however, the corresponding average is only two years. Kartigian car manufacturers note that new - car marketing in Pomon stresses image over utility. They plan to emulate Pomonan practices for new - car marketing in an effort to bring Kartigian consumers’ car - buying practices closer to the pattern observed in Pomon.

Which of the following, if true, most seriously calls into question whether the change in marketing strategy proposed by Kartigian car manufacturers will produce the desired effect?